Title :
Optical duobinary transmission system featuring improved receiver sensitivity and reduced optical bandwidth
Author :
Kim, Hoon ; Yu, Charles X.
Author_Institution :
Lucent Technol. Bell Labs, Holmdel, NJ, USA
Abstract :
We propose and demonstrate a simple method to improve both the receiver sensitivity and spectral efficiency of the optical duobinary transmission system. Compared to the conventional duobinary signal generated by using an electrical low-pass filter, more than 1-dB improvement of receiver sensitivity and /spl sim/20% reduction in the spectral width are achieved simply by filtering the 10-Gb/s duobinary signals with a narrow-bandwidth (7 GHz) optical filter.
Keywords :
optical filters; optical receivers; sensitivity; wavelength division multiplexing; 10 Gbit/s; 7 GHz; DWDM; duobinary signal generation; electrical low-pass filter; narrow-bandwidth optical filter; optical duobinary transmission system; receiver sensitivity; reduced optical bandwidth; spectral efficiency; Bandwidth; Filtering; Low pass filters; Optical filters; Optical modulation; Optical receivers; Optical sensors; Optical transmitters; Signal generators; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2002.1022019
